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Villarruel CA, Abebe M, Burns WK.Villarruel CA, et al. Among authors: burns wk.Opt Lett. 1982 Dec 1;7(12):626-8. doi: 10.1364/ol.7.000626.Opt Lett. 1982.PMID: 19714113
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Moeller RP, Burns WK.Moeller RP, et al. Among authors: burns wk.Opt Lett. 1991 Dec 1;16(23):1902-4. doi: 10.1364/ol.16.001902.Opt Lett. 1991.PMID: 19784177